NullPointerException when component has no lead

Exception thrown from listener [com.atlassian.jira.event.listeners.mail.MailListener] : null
java.lang.NullPointerException
	at com.atlassian.jira.notification.NotificationRecipient.<init>(NotificationRecipient.java:25)
	at com.atlassian.jira.notification.type.enterprise.ComponentLead.getRecipients(ComponentLead.java:47)
	at com.atlassian.jira.notification.DefaultNotificationSchemeManager.getRecipients(DefaultNotificationSchemeManager.java:208)
	at com.atlassian.jira.event.listeners.mail.MailListener.createMailItems(MailListener.java:114)
	at com.atlassian.jira.event.listeners.mail.MailListener.sendNotification(MailListener.java:79)
	at com.atlassian.jira.event.listeners.mail.MailListener.issueCreated(MailListener.java:151)
	at com.atlassian.jira.event.issue.AbstractIssueEventListener.workflowEvent(AbstractIssueEventListener.java:98)
	at com.atlassian.jira.event.issue.IssueEventDispatcher.dispatchEvent(IssueEventDispatcher.java:105)
	at com.atlassian.jira.event.issue.IssueEventDispatcher.dispatchEvent(IssueEventDispatcher.java:86)
	at com.atlassian.jira.workflow.function.event.FireIssueEventFunction.execute(FireIssueEventFunction.java:58)
	at com.opensymphony.workflow.AbstractWorkflow.executeFunction(AbstractWorkflow.java:1179)
	at com.opensymphony.workflow.AbstractWorkflow.transitionWorkflow(AbstractWorkflow.java:1434)
	at com.opensymphony.workflow.AbstractWorkflow.initialize(AbstractWorkflow.java:584)
	at com.atlassian.jira.workflow.SimpleWorkflowManager.createIssue(SimpleWorkflowManager.java:163)
	at com.atlassian.jira.issue.managers.DefaultIssueManager.createIssue(DefaultIssueManager.java:305)
	at com.atlassian.jira.issue.managers.DefaultIssueManager.createIssue(DefaultIssueManager.java:253)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:324)
	at com.atlassian.util.profiling.object.ObjectProfiler.profiledInvoke(ObjectProfiler.java:71)
	at com.atlassian.jira.config.component.SwitchingInvocationHandler.invoke(SwitchingInvocationHandler.java:28)
	at $Proxy3.createIssue(Unknown Source)
	at com.atlassian.jira.web.action.issue.CreateIssueDetails.createIssue(CreateIssueDetails.java:140)
	at com.atlassian.jira.web.action.issue.CreateIssueDetails.doExecute(CreateIssueDetails.java:109)
	at webwork.action.ActionSupport.execute(ActionSupport.java:153)
	at com.atlassian.jira.action.JiraActionSupport.execute(JiraActionSupport.java:58)
	at webwork.dispatcher.GenericDispatcher.executeAction(GenericDispatcher.java:132)
	at com.atlassian.jira.web.dispatcher.JiraServletDispatcher.service(JiraServletDispatcher.java:178)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
	at com.atlassian.jira.web.filters.AccessLogFilter.doFilter(AccessLogFilter.java:51)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
	at com.opensymphony.module.sitemesh.filter.PageFilter.parsePage(PageFilter.java:119)
	at com.opensymphony.module.sitemesh.filter.PageFilter.doFilter(PageFilter.java:55)
	at com.atlassian.jira.web.filters.SitemeshExcludePathFilter.doFilter(SitemeshExcludePathFilter.java:38)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
	at com.atlassian.seraph.filter.SecurityFilter.doFilter(SecurityFilter.java:182)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
	at com.atlassian.seraph.filter.LoginFilter.doFilter(LoginFilter.java:177)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
	at com.atlassian.util.profiling.filters.ProfilingFilter.doFilter(ProfilingFilter.java:132)
	at com.atlassian.jira.web.filters.ProfilingAndErrorFilter.doFilter(ProfilingAndErrorFilter.java:25)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
	at com.atlassian.jira.web.filters.ActionCleanupDelayFilter.doFilter(ActionCleanupDelayFilter.java:39)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
	at com.atlassian.johnson.filters.JohnsonFilter.doFilter(JohnsonFilter.java:91)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
	at com.atlassian.jira.web.filters.gzip.GzipFilter.doFilter(GzipFilter.java:72)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
	at com.atlassian.core.filters.AbstractEncodingFilter.doFilter(AbstractEncodingFilter.java:37)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:856)
	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:744)
	at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
	at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
	at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
	at java.lang.Thread.run(Thread.java:534)